two suggestions for you:
1) Did you install the latest version of WCPUID? The latest version if 3.0
f, however, you mention having version 3. So if you don't have it, I would reccomend going and downloading it. Here is the link to it ------>
WCPUID 3.0f
2) Do you have admin rights on your Win2k machine when you run WCPUID? The program will NOT run if you are not an admin or don't have administrator rights due to the fact that the programs accesses a file which can only be accessed by an administrator.
See these two suggestions and see if they help you out. Let us know how it goes.... good luck
-David